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The Selz is a river in Rhineland-Palatinate, Germany, a left tributary to the Rhine. It flows through the biggest German wine region, which is called Rheinhessen. It rises near the village Orbis in the Donnersbergkreis, passes the border from the Palatinate to Rheinhessen and after about the city of Alzey in the Alzey-Worms district. There the river passes a pond, and vanishes underground, flowing through the canalisation of the town. On their way she crosses Gau-Odernheim, Nieder-Olm and Ingelheim, finally discharging in Frei-Weinheim into the Rhine. Its comprising watershed is determined by warm dry climate showing an average yearly precipitation around . Despite its slender, in many cases irregular water flow conditions, the Selz is regarded as receiving stream of the low rainfall area of the rheinhessian rolling country. During low water periods the discharge consists to a notable amount out of clean effluents of wastewater treating plants. == Environmental restoration == Some decades of the 20th century were characterized by river straightening throughout the rivers and creeks in Germany. Due to this river training in the years between 1958–1963, the Selz creek is constricted between embankments and flows relative meandering through the plain, between the famous rolling hills of Rheinhessen. In order to stop river bed degradation and to improve both, biodiversity and flood protection, the local nature conservation foundation (''Selztalverband'') and the district Mainz-Bingen managed a revitalization of the Selz over a notable length between Hahnheim, Undenheim and Sörgenloch. Loss of floodplain and shorter river reaches caused higher flood peaks and risk of flood in the past. Some floods near disaster were the reason for a restoration concept. The concept contains flood protection, river bed stabilization and renaturization measures. The main objectives are: * flood protection for HQ100 * improvement of the ecological situation * stabilizing river bed/erosion control * stabilizing groundwater level Floodplains have been increased between in width. Nature is allowed to develop undisturbed in biotopes, which protect and promote the biodiversity of the landscape with its meadows, trenches, bank slopes, marsh areas, wetland, phragmites, willows, hedges and boundary ridges. During the past 25 years, the village of Hahnheim has planted 27,000 trees and hedges along the Selz in its boundary. Since the Selz renaturation project covers several miles of the Selz River's bank, it is increasing the total length of the river. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Selz」の詳細全文を読む スポンサード リンク
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